sorquan/raid_levels.md

Created April 25, 2021 10:49

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Raw

    

Level
Disks
Hot spare
Available space
Fault tolerance
Read
Write


RAID 0
from 2
-
disk size * dIsk count
-
high
high

RAID 1
2
+
disk size
1 disk
medium
medium

RAID 1E
2
-
disk size
1 disk
high
medium

RAID 5
from 3
+
disk size*(disk count-1)
1 disk
high
low

RAID 5EE
from 4
-
disk size*(disk count-2)
1 disk
high
low

RAID 6
from 4
+
disk size*(disk count-2)
2 disk
medium
low

RAID 10 (1+0)
from 4, even
+
disk size*(disk count/2)
1 disk in every RAID 1
medium
medium

RAID 50 (5+0)
from 6, even
+
disk size*(disk count-2)
1 disk in every RAID 5
high
low

RAID 60 (6+0)
from 8, even
+
disk size*(disk count-4)
2 disk in every RAID 6
medium
low



  

Level	Disks	Hot spare	Available space	Fault tolerance	Read	Write
RAID 0	from 2	-	disk size * dIsk count	-	high	high
RAID 1	2	+	disk size	1 disk	medium	medium
RAID 1E	2	-	disk size	1 disk	high	medium
RAID 5	from 3	+	disk size*(disk count-1)	1 disk	high	low
RAID 5EE	from 4	-	disk size*(disk count-2)	1 disk	high	low
RAID 6	from 4	+	disk size*(disk count-2)	2 disk	medium	low
RAID 10 (1+0)	from 4, even	+	disk size*(disk count/2)	1 disk in every RAID 1	medium	medium
RAID 50 (5+0)	from 6, even	+	disk size*(disk count-2)	1 disk in every RAID 5	high	low
RAID 60 (6+0)	from 8, even	+	disk size*(disk count-4)	2 disk in every RAID 6	medium	low

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